Siren and driving means therefor



May 25 1926, 1,586,101

L. H. MILES SIREN AND DRIVING MEANS THEREFOR Filed August 22, 1925INVENTOR. 25' LESTER H. MILES ATTORNEY.

Patented May 25, 1926. I v

UNITED STATES 1,586,101 PATENT "OFFICE.

LESTER H MILES, OF LOS ANGELES, CALIFORNIA.

SIREN AND DRIVING- MEANS THEREFOR.

Application filed August 22, 1825- Serial H0. 51,884.

driven from the periphery of the fan of a gasoline engine.

Another object of the invention is to provide the mounting for a sirenwhereby it may be held in position to be driven from the fan wheel of agasoline engine.

Other objects of the invention willbe aparent from the followingdescription taken in connection with the accompanying drawin wherein;

T ig. 1 is a top plan view of a port1on of a gasoline engine showing mysiren applied thereto;

Fi 2 is a top plan view partly in'section showing the attachment;

Fig. 3 is an end view of the siren, and Fig. 4 is an end view of the fanwheel. Referring to the drawing by reference characters, I have shown anengine frame at 10. This frame provides a support for the shaft 11 onwhich the hub 12 of a fan is mounted. ,This fan is provided with radialvanes 14 on which a peripheral rim 15 is arranged. The shaft 11 has apulley 16 thereon which receives'a driving belt 17 for the purpose ofdriving the fan.

Mounted upon the frame 12 is a supporting plate 18 which has a pair ofapertures therein to receive fastening studs 19 whereby it may be boltedto the frame.

The supporting plate is provided with a projecting portion 20 which hasa boss 21 thereon which is apertured to receive a post 22. This post maybe held in adjusted position by means of a lock nut 23. I

The siren comprises a stator 24 and a rotor 25 and the stator isprovided with a lug 26 thereon. The post 22 has a bracket 27 thereonwhich has a pair of spaced In S 28 secured thereto. The in 26 is arrangebetween the la. tured to receive a shaft 29 which is pinned to the lug26 and which is free to move in the apertures in the lugs 28.

A. spr' 33 surrounds the shaft 29 and s fixed to tins shaft as shown inFig. 3. This spring has one end 31 fitted in a recess in one of the lugs28 and the construction is such that normally the spring tends to turnthe stator in one direction.

28 and t ese lugs are aper- The siren rotor includes a projectingthreaded shaft 33 which has a dr1vin disc 34 thereon. This disc may bema e of fibrous material and is arranged between ad- 1ustablelock nuts35 so that it can be moved back and forth. a

The projecting portion 20 is so positioned that the disc 34 w1 1l be inengagement with the rim 15 of the fan when the siren is in operatingposition. I

In order to move the siren I providea connection 36 thereon which isconnected to a spring 37 and this spring 37 is connected 1n turn with anoperating member 38.

The construction is such that normally the.

spring 30 holds the siren with the disc 34 out of engagement with therim 15. When the operating member 38 is pulled the siren w11l beswungabout the shaft 29 against the tension of the spring 30 and will bringthe disc 34 against the rim 15 to cause rotation of the siren. Byincluding the spring 37 theliability of breaka e is reduced to a minimumsince this resi ient connection will take up a sudden im ulse given'tothe operating member 38 an will thereby remove the strain.

lfIaving thus described my invention, 1 claim:

1. In combination with a siren including a rotor anda stator, a supportfor said siren, means to drive said siren; a bracket on said support,said bracket having a pair of spaced lugs thereon, means whereby saidbracket may be adjusted to different positions on said support, saidstator having a lug thereon adapted to be position between sald firstmentioned lugs, a shaft fitted on said bracket and engaging said: spacedlugs and the lug on the stator, a spring normally urging said siren inone direction about said shaft, an operating member and resilient meansengaging said. operating member for moving the siren against the actionof the spring into cooperative relation with said driving means.

' 2. In a device of the class described, an engine frame, a fan mountedthereon, means for driving said fan, said fan including radial vanes, arim on said vanes, a siren, means to mount said siren on said engineframe, said means including a projecting plate on' the engine frame, anaperture in said projecting. plate, a bracket having a post mounted forvertical adjustment in said aperture, said siren including a rotor anda, stator, said bracket having a pair of for swinging seid siren in onedirection to spaced lugs thereon, seid stator having a contact with therim of said fan and means H0 lug thereon fitted between said firstmenfor swinging said siren in another direction tioned lugs, a shaftpassing through all of out of contact therewith.

5 said lugs, means to l rge said shaft in one 'di- In testimony whereof,I hereunto affix my rection, seid rotor having a friction discsignature. thereon, said disc being mounted adjacent to the periphery ofsaid fen wheel, a spring LESTER H. MILES.

